LIN COMMUNICATION SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

PROCEDURE

1. Click here

   VEHICLE BROUGHT TO WORKSHOP

   Result
   Proceed to NEXT

   
   
   • NEXTClick here
2. Click here

   CUSTOMER PROBLEM ANALYSIS

   Tip:
   

   • In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.

   • Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

   • The following 5 items are important points for problem analysis:

   What	Vehicle model, system name
   When	Date, time, occurrence frequency
   Where	Road conditions
   Under what conditions?	Driving conditions, weather conditions
   How did it happen?	Problem symptoms

   Result
   Proceed to NEXT

   
   
   • NEXTClick here
3. Click here

   PRE-CHECK

   
   

   1. Measure the auxiliary battery voltage with the power switch off.

      Standard Voltage
      11 to 14 V

      If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

   2. Check the fuses and relays.

   3. Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
4. Click here

   INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

   
   

   1. Using the GTS, check for CAN communication system DTCs.

      Click here

      Result
      Result Proceed to DTCs are not output A DTCs are output B

   
   
   • AClick here
   • B

     GO TO CAN COMMUNICATION SYSTEMClick here

5. Click here

   INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

   
   

   1. Using the GTS, check for LIN communication system DTCs.

      Click here

      Result
      Result Proceed to DTCs are not output A DTCs are output B

   
   
   • AClick here
   • B

     GO TO DIAGNOSTIC TROUBLE CODE CHARTClick here

6. Click here

   OVERALL ANALYSIS AND TROUBLESHOOTING*

   
   

   1. Terminals of ECU

      Click here

   2. Data List / Active Test

      Click here

      Result
      Proceed to NEXT

   
   
   • NEXTClick here
7. Click here

   REPAIR OR REPLACE

   Result
   Proceed to NEXT

   
   
   • NEXTClick here
8. Click here

   CONFIRMATION TEST

   Result
   Proceed to NEXT

   
   
   • NEXT

     END